﻿using System;
using System.Net.Sockets;
#if NET45
using System.Threading.Tasks;
#endif

namespace Thrift.Transport
{
    /// <summary>
    /// PropertyInfo for the DualMode property of the System.Net.Sockets.Socket class. Used to determine if the sockets are capable of
    /// automatic IPv4 and IPv6 handling. If DualMode is present the sockets automatically handle IPv4 and IPv6 connections.
    /// If the DualMode is not available the system configuration determines whether IPv4 or IPv6 is used.
    /// </summary>
    internal static class TSocketVersionizer
    {
        /// <summary>
        /// Creates a TcpClient according to the capabilitites of the used framework
        /// </summary>
        internal static TcpClient CreateTcpClient()
        {
            TcpClient client = null;

#if NET45
            client = new TcpClient(AddressFamily.InterNetworkV6);
            client.Client.DualMode = true;
#else
            client = new TcpClient(AddressFamily.InterNetwork);
#endif

            return client;
        }

        /// <summary>
        /// Creates a TcpListener according to the capabilitites of the used framework.
        /// </summary>
        internal static TcpListener CreateTcpListener(Int32 port)
        {
            TcpListener listener = null;

#if NET45
            listener = new TcpListener(System.Net.IPAddress.IPv6Any, port);
            listener.Server.DualMode = true;
#else

            listener = new TcpListener(System.Net.IPAddress.Any, port);
#endif

            return listener;
        }
    }
}
